Brake



INVENTOR- ancaa L. PRICE.

J. L. ICE

BRAKE Filed March 22. 1925 iii! Patented Nov. 3, 1927.

tfihll l liw STATES LWfifiZ FATENT QFFHQE,

I JACOB L. 231GB. OF SOUTH BEND, INDIANA, ASSIGNOB TO VINCENT BENDIX, OF

CHICAGO,

ILLINOIS.

BRAKE.

Application filed March 2 tured at a iuinunum cost and will, neverthein less, be etiicient in operation and possess certain other advantages over prior constructions.

it is a further object of the invention to provide an internally expanding brake hand that will be so reinforced as to form the band into a plurality of brake units that will be inherently flexible and also connected together by flexible sections of the hand. so that these several hraltc units may adapt themselves to the bralodrum in which the baud installed. and will also be eontrollahle, in their application to the brake drum, and thus prevent. the grabbing action which internally expanding lJIltlil. hands are usually found to possess.

Other objects of the invention and the features of novelty will he apparcn following description taken in connection with the accon'ipanvino drawings. of which:

Fig. 1 side elevation of a hralte enihodying my inventioi ltc drum being i. the bra shown in section on lhe line l---l of Fig. 2;

2 is a section on the line 2-2 of Fig. 1 and Fig. i) is a pcrsplwtivc view of a form of my invention. but slightly band. ciiil'iodying constructum illustrated in different from the Figs. 1 and 2.

Referring to the drawings, the usual brake druin within \v arranged a flexible hand 11 having the usual lining material 12 on its outer surface. The usual actuating: cam is shown at 13, this cam being mounted on a shaft 14 that is carried by the dust shield 15 onthe end of the axle housing 16. While. l: have shown the 38,111 1? for actuating the brake, it is to he understood that any of the usual forms of actuatine device, for bralzcs, may be employed.

I arrange across the interior of the hand a plurality of struts or braces which connectspaced portions of the band together ant, in the two forms of the invention illustrated, 1 have shown three of these struts, the same 11) indicates lm-h there 15 l from the internally expanding 2, 1926. Serial 1%. 96,376.

being indicated, in Fig. 1, by the numerals '17, 18 and 19. In the arrangcn'ient of these struts, they constitute chords of the circle of the hand and the ends of the struts are provided with feet 20, which are riveted or otherwise secured to the interior of the band. llhc ad aceut ends of the struts 17 and 18 are spaced apart of the band, as indicated at 21, therebctwcen and there is a similar flexible portion of the band, 2.2, between the adjacent ends of the struts 1S and 19. Brackets 23 may be secured to the struts 17 and 19, these brackets having surfaces 'ith which the cam 13 cooperates for the purpose of expanding the hand. A spring Qat may connect the struts 17 and 19 for the purpose of retracting the hand, when the brake is released.

Each of the struts or braces 17, 18 and 19, with the portion of the hand that is spanned thereby, constitutes a substantially rigid brake unit of which the hand portion is relatively flexible, so as to conform to the inner surface of the brake drum. The several brake units, on account of being connected together by the flexible portions of the hand, 21 and 22, are separately controllahle and the brake. as a whole, will be free from the grabbing action that is usually inherent in internally expanding hand brakes, since the struts 17, 18 and 19 will directly transmit actuating forces, so that the hand itself, throughout its entire length, is not depended upon to transmit these forces. The struts also serve to hold the parts of the hand hat are connected thereby in a definite relation, at all times.

In the form of the invention illustrated in Fig. 3, the strut or brace 18 is further connected with the, portion of the hand, between the ends thereof, by the V-shapcd brace 25 which has its middle portion riveted 01' 0thcrwise secured to the strut 18, as indicated at 26, and its ends secured to the portion of the hand, between the ends of the. strut 18, as indicated at 27 and 28. This has the effect of makin the brake unit, as a whole, a more nearly rigid structure because of its trusslilcc construction, although it; has sullicient flexibility to conform to the brake drum. further modification, that is illustrated in Fig. 3 is the bending of the ends of thEStruts 2.) anu .40 to form the ahutinents 31 and 3 which cooperate with the actuating cam, this arrangement making it unnecessary to use to leave a flexible portionthe sepamfie brackc'is shown in Fig. 1. Having thus describe my invcntifin, 1 claim:

1. In brakes, an. :axpansiicsie bami haying a: plurality of strum secuze to the int-Erie? thereof and rigidly connecting spaccci points on the band together, the porticns of aha hand between the enris 01 said struts being relatively flexible.

In brakes, an 'expansible bikffld having a, plurality of stmzs zecured, .10 the im'ccrior flierecf and .rigidiy cczmecting spaced points 031 the band together, the pertions of the ban x. the ends of struts being )ifii'i its Winnie from the ends the band 'bcil'ig spaccd apart to leave flexible portions of thc band. thez-"ciae'izween. Y

In brakes, an expansihle, band having 213 means secured n. the interior hcrecf and dividing the band into a c tively scpamte brake membez'gfiw ends 01? said members being rigidly connectcci by W {said mean s, zmd the poi tions of the M nd included m each 0f said members being flexible.

4. En brakes, an expansibie band having means'sccmed. 0n the im'zeriec mhGIQOf and diviciing bani into piumiity of melativeiy spzirate brake members, ihe'ends of the. sai"- members which are rcnwte from the of the band being spaced apart and conn'cced tag-ether by fieXibF-B portions of band.

In brakes, extp'ansiblc Emmi having strufis secured 01m $0 the-opposite encis strut.

i the band extending in diverging rah arid amending in divergingstruts secured at am and to the opposits ends of the band and extending in diverging relation across the interior thereof and se-- cured at their opposite ends to intermediam psrtions of the nails and the portions of the band between the ends of the respective flexible, ani the ends 0f the attached in ends 0f the stuts being struts whic baiid being pirovideci with abutmcnvts 02? npemtion with an actuating means for brake.

8. In brakes, an expansibie band hm a strut 0f the same Width band tending across $3118 interior and attached at its ends as the band. ike pcr'lon of the b Aid that is spanned by said strut heing rgaiafiyw lyfiexib'ie;

9. In brake'q, an expansible band having 2 sihrut extending across the intcrior and. tached at ends to ihe band. the porticn 0i band that is spanned by saici strut being flexible, and connecting an inimmediate pcrtion of said strut with the poz'timi of the band that is spanned by the JAGQIB L.

the 

